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Model M twin carbon arc lamp manufactured by the H. G. Fischer company of Chicago for use by doctors administering electrical ultra violet treatment for a variety of ailments, from tonsillitis and nervousness to rickets, asthma and sciatica. Fischer went on to manufacture early x-ray equipment. By 1930 this lamp had evolved to Model O with a round base and castors, so this is likely from 1920-1925.
The carbon arc components have been swapped out with a standard porcelain socket so the lamp now accommodates a standard light bulb.
The ornamental iron base consists of a sturdy open work pedestal and curvilinear tripod feet. Star shaped ventilation perforations and beam focusing produce dramatic lighting. Not just a pretty face, the angle of the light beam can be adjusted up or down. Sitting atop a table and angled downward it makes a strong reading light; sitting on the floor and angled upward it makes a dramatic accent lamp.
Please note: metal shades become very hot thus are not suited for use where young children might burn their fingers or use it as a coat rack.
By the 1970s H.G. Fischer was acquired for its finishing and electrostatic processing capabilities by Minneapolis pump manufacturer, Graco, Inc.
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The advertisement below appeared in a 1929 issue of Popular Mechanics. The marketer, National Health Appliance Corporation," is located in Chicago and is assumed to have been H. G. Fischer, possibly trying to sell off old inventory since a year later this lamp was redesigned and offered as the Model O. The text attributes the product to, "one of the country's leading manufacturers of electrical equipment for physicians."

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